Necrosis in the "pipping" muscle of the chick.
D000818:Animals; D002642:Chick Embryo; D002645:Chickens; D004487:Edema / Q000473:pathology / Q000662:veterinary*; D006470:Hemorrhage / Q000473:pathology / Q000662:veterinary*; D009135:Muscular Diseases / Q000473:pathology / Q000662:veterinary*; D009336:Necrosis / Q000662:veterinary; D011201:Poultry Diseases / Q000473:pathology*